DOT number requirements at a glance
Federal FMCSA rules apply to commercial carriers in every state, including California. Your USDOT number must be:
- Displayed on both sides of the power unit
- In a color that contrasts sharply with the vehicle
- Readable from 50 feet in daylight — no federal letter height is set; we cut 2″ as the safe floor
- Shown as “USDOT 1234567” — the letters “USDOT” before your number
These are the federal baseline standards. California intrastate carriers may have additional state requirements — tell us your state at checkout and we'll match them, or verify current rules with your state DOT/DMV.
California’s own rules — verified against state law
✓ Checked against California statutes and regulations · last verified 2026-07-24
- California requires its carrier identification number displayed on both sides — but displaying your valid USDOT number satisfies the law (CVC 34507.5(f)(1)), and you must hold a USDOT number to get the CA number anyway. Industry practice (and our recommendation): display both lines — 'USDOT #######' over 'CA ######'. Triggers: trucks over 10,000 lbs, or hauling property for compensation at any weight. Exemptions include pickups in noncommercial/private light use, implements of husbandry, and historical vehicles (CVC 34507.5(e)).
- California requires the operator's name or trademark on both sides (CVC 27900). Bought a used truck? The previous company's name must be removed or covered within 60 days (CVC 27900(d)) — we can remove old markings and cut your new set in one visit.
Not sure which of these hits your truck? Run the free 60‑second compliance check — answer a few questions and it builds your exact decal list, numbers filled in.
Get compliant — shop USDOT decals →
Rules can change — the authority on current requirements is your state agency (California DMV — Motor Carrier Permit Branch).
What we cut for California carriers
USDOT Number Decals
Your USDOT number cut to FMCSA spec — set of 2, both sides.
$16+MC Number Decals
Motor Carrier (MC) number lettering for interstate carriers.
$16+GVW / GVWR Decals
Gross weight-rating decals for trucks, trailers & dumps.
$16+Full Compliance Kit
Company name + USDOT + MC + GVW, all cut to match.
$54.95+Truck Door Lettering
Business name & fleet unit numbers — pro look, no wrap.
$18.95+Serving trucking across California
We ship to owner-operators, contractors, and fleets throughout California — including Los Angeles, Long Beach, Sacramento and Fresno — with a 1–2 business day turnaround. Every decal is cut on commercial-grade outdoor vinyl rated for 5+ years, weeded, taped, and ready to peel and stick.
What California actually requires
Most decal sites quote the federal number and stop there. This is California's own intrastate rule, read from the primary source and dated — the same data behind our free compliance checker.
| Trucks that never leave California | Markings required at 10,001 lbs or more |
|---|---|
| What goes on the door | USDOT 1234567 + your legal or trade name |
| Letter height | Legally must be readable from 50 feet in daylight; we cut 2″ as the safe floor |
| Required on | both sides of the power unit |
California requires its carrier identification number displayed on both sides — but displaying your valid USDOT number satisfies the law (CVC 34507.5(f)(1)), and you must hold a USDOT number to get the CA number anyway. Industry practice (and our recommendation): display both lines — 'USDOT #######' over 'CA ######'. Triggers: trucks over 10,000 lbs, or hauling property for compensation at any weight. Exemptions include pickups in noncommercial/private light use, implements of husbandry, and historical vehicles (CVC 34507.5(e)).
Source: CVC 34507.5 · verified 2026-07-24 · general information, not legal advice — confirm with California DMV — Motor Carrier Permit Branch (916) 657-8153.
Check my truck free →California DOT decal FAQ
Do I need a USDOT number in California?
If you operate a commercial vehicle over 10,001 lbs, haul hazardous materials, or carry passengers for hire, federal law requires a USDOT number displayed on both sides of the vehicle — and many California intrastate carriers need one too. We cut yours exactly as it should read.
What size do USDOT decals have to be?
FMCSA’s actual standard is legibility — readable from 50 feet in daylight, in a color that contrasts sharply with your truck, with “USDOT” shown before the number. Two-inch letters are the industry floor that reliably clears that bar, and some states set their own minimum on top of the federal rule. We cut 2″ by default and also cut 3″ and 4″ for larger trucks.
How fast can you ship decals to California?
We make every order in 1–2 business days and ship nationwide, so most California carriers have their decals in hand within a few days. Everything arrives weeded, taped, and ready to apply.
Can you match California's requirements?
Yes. Tell us your state and vehicle at checkout and we cut to your California intrastate spec. Not sure what you need? Message us — 20 years in vehicle graphics means we'll get it right.
Not sure exactly what California requires?
Answer 7 quick questions and get the exact decal list for your truck — federal and California rules checked against the actual regulations, sources cited, sizes included.
Run the free compliance check →Ready to get your California trucks compliant?
Cut to spec, shipped fast, and backed by our guarantee: cut right or we remake it free.
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